CN102293012A - Acoustic in-ear detection for earpiece - Google Patents
Acoustic in-ear detection for earpiece Download PDFInfo
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- CN102293012A CN102293012A CN200980155109XA CN200980155109A CN102293012A CN 102293012 A CN102293012 A CN 102293012A CN 200980155109X A CN200980155109X A CN 200980155109XA CN 200980155109 A CN200980155109 A CN 200980155109A CN 102293012 A CN102293012 A CN 102293012A
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- earphone
- worn
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- sound
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6813—Specially adapted to be attached to a specific body part
- A61B5/6814—Head
- A61B5/6815—Ear
- A61B5/6817—Ear canal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/15—Determination of the acoustic seal of ear moulds or ear tips of hearing devices
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Otolaryngology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Pathology (AREA)
- Biophysics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Headphones And Earphones (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
An apparatus comprising an earpiece and a signal processor is disclosed. The earpiece is suitable to be applied at an auditory opening of a user's ear. The earpiece comprises a speaker enabled to be supplied with an audio signal for rendering, and a microphone arranged in vicinity of the speaker to acquire a sound signal from sounds present inside the auditory opening when the earpiece is applied at the ear. The signal processor is arranged to determine whether the earpiece is applied at the user's ear by analysis of the acquired sound signal comprising any of a sound signal component of an in-ear sound type present when the earpiece is applied or an outside-ear sound type present when the earpiece is not applied. A method and a computer program are also disclosed.
Description
Technical field
The present invention relates to be used to detect the equipment of wearing, the method and computer program of earphone.Specifically, the present invention relates to according to the detection that voice signal carried out of obtaining wearing.
Background technology
Utilize wired or wireless earphone to provide the device of language, music etc. to become very universal to the user.This device can be portable electronic device, mobile phone and portable digital-assistant.At present people have begun to utilize and whether earphone is in inspection that LisPos (that is, whether being worn on ear) carries out to reduce power consumption when the user can not be provided by any audio content that provides.For example, in US 2006/0045304A1, disclose a kind of detecting element, it comprises two electrodes on the outer surface that is positioned at headset main body, makes that when earphone was worn on ear, the skin in the ear contacted with electrode.User's head conducts electricity between electrode, is worn on ear thereby can detect earphone.
Yet, because this device will use by any domestic consumer, therefore since arbitrary electrode may with user's bodily tissue loose contact, so guarantee the detection of wearing is considered to insecure.Therefore, further expectation provides reliable detection more still to be easy to simultaneously the equipment that is used by domestic consumer.
Summary of the invention
The present invention is based on such understanding, it is comfortable that domestic consumer's sensation is used earphone, and the interpolation microphone can be used to obtain sound in earphone, thus the sound that exists in the earphone is measured.According to the sound that obtains, can detect to determine whether earphone is worn on user's ear.
According to first aspect, provide a kind of equipment that comprises earphone and signal processor.Earphone is suitable for being worn on the sense of hearing opening of user ear.Described earphone comprises and allows to be provided audio signal with the loud speaker that presents be arranged near the described loud speaker microphone that described microphone is used for obtaining voice signal from the sound that is present in the described sense of hearing opening when described earphone is worn on ear.Described signal processor is set to, determine by analyzing the voice signal obtained whether described earphone is worn on user's ear, the voice signal that is obtained comprises any one in the voice signal component of sound type outside the ear of the voice signal component of the tympanophonia sound type of existence when described earphone is worn or existence when earphone is not worn.
Described tympanophonia sound type signal component can comprise the physiology voice signal.Described physiology voice signal can comprise the signal component with user's breathing acoustic correlation connection.Described physiology voice signal can comprise the signal component that is associated with user's heartbeat.Described signal processor can be set to extract heartbeat by in low pass filter described physiology voice signal being carried out low-pass filtering, to detect heartbeat signal.The cut-off frequency of described low pass filter can more preferably be between 3 to 5Hz, to be most preferably 4Hz between 3 to 10Hz.
The outer sound type of described ear can comprise ambient noise, and described signal processor can be set to determine that earphone is not worn when ambient noise surpasses threshold level.Can determine described threshold level from being present in another microphone that sound beyond the described sense of hearing opening obtains voice signal to the measurement of actual environment noise by being associated with described earphone and always being set to.
Described signal processor can be set to deduct described audio signal so that described voice signal component to be provided from described voice signal.
Described equipment can further comprise application, and this application is configured to based on whether earphone being worn the feature of determining to control described application.This application can be set to not interrupt and presenting that described audio signal is associated when definite earphone is worn, and is set to recover described presenting when definite earphone is worn.Alternatively or additionally, this application can be set to set up the communication that is associated with described audio signal when determining that earphone is worn, and is set to finish when definite earphone is not worn described communication.
Described analysis can be and periodically based on the frequency characteristic of the voice signal that is obtained any one.
According to second aspect, a kind of method that is applicable to the equipment that comprises earphone is provided, described earphone is suitable for being worn on user's ear to present audio signal in ear when described earphone is worn on user's ear.This method may further comprise the steps: obtaining step, obtain voice signal by the microphone that is arranged near the described earphone the loud speaker, described microphone is used for when described earphone is worn on described user's ear obtaining voice signal from the sound that the sense of hearing opening of described ear exists; And determining step, determine by analyzing the voice signal obtained whether described earphone is worn on described user's ear, the voice signal that is obtained comprises any one in the voice signal component of sound type outside the ear of the voice signal component of the tympanophonia sound type of existence when described earphone is worn or existence when earphone is not worn.
Described tympanophonia sound type signal component can comprise the physiology voice signal.Described physiology voice signal can comprise the signal component with user's breathing acoustic correlation connection.Described physiology voice signal can comprise the signal component that is associated with user's heartbeat.Described signal processor can be set to extract heartbeat by in low pass filter described physiology voice signal being carried out low-pass filtering, to detect heartbeat signal.The cut-off frequency of described low pass filter can more preferably be between 3 to 5Hz, to be most preferably 4Hz between 3 to 10Hz.
The outer sound type of described ear can comprise ambient noise, and determines that described earphone is not worn when ambient noise surpasses threshold level.This method can further may further comprise the steps: by by another microphone that is associated with described earphone described threshold level being determined in the actual environment noise measurement beyond the described sense of hearing opening.
This method can further may further comprise the steps: deduct described audio signal so that described voice signal component to be provided from described voice signal.
This method can further may further comprise the steps: based on the described feature of determining to control application.This method can further may further comprise the steps: do not interrupt and presenting that described audio signal is associated when definite described earphone is worn; And when being worn, recovers described presenting by definite described earphone.Additionally or alternatively, this method can further may further comprise the steps: when determining that described earphone is worn, set up the communication that is associated with described audio signal; And when not worn, finishes by definite described earphone described communication.
Described analysis can be and periodically based on the frequency characteristic of the voice signal that is obtained any one.
According to the third aspect, a kind of computer-readable medium that comprises program code is provided, described program code comprises and is set to make processor to carry out instruction according to the method for second aspect when being carried out by processor.
Described instruction is applicable to making: audio signal is offered the loud speaker of earphone, and described earphone is suitable for being worn on user's ear to present described audio signal in ear when described earphone is worn on user's ear; Obtain voice signal by the microphone that is arranged near the described earphone the loud speaker, described microphone is used for when described earphone is worn on described user's ear obtaining voice signal from the sound that the sense of hearing opening of described ear exists; Determine by analyzing the voice signal obtained whether described earphone is worn on described user's ear, the voice signal that is obtained comprises any one in the voice signal component of sound type outside the ear of the voice signal component of the tympanophonia sound type of existence when described earphone is worn or existence when earphone is not worn.
Described tympanophonia sound type signal component can comprise the physiology voice signal.Described physiology voice signal can comprise the signal component with described user's breathing acoustic correlation connection, and the instruction that is used to determine can comprise determine the instruction that described earphone is worn when breathing sound can detect.Described physiology voice signal can comprise the signal component that is associated with described user's heartbeat, and the instruction that is used to determine can comprise determine the instruction that described earphone is worn when heartbeat can detect.This computer program can further comprise and be used for extracting heartbeat so that the instruction of heartbeat signal to be provided by at low pass filter the physiology voice signal being carried out low-pass filtering.This computer program can further comprise instruction, and described instruction is used to make described low pass filter to have cut-off frequency between 3 to 10Hz, more preferably is 3 to 5Hz, is most preferably 4Hz.
The outer sound type of described ear can comprise ambient noise, and the instruction that is used to determine can comprise when ambient noise and determines the instruction that described earphone is not worn during above threshold level.This computer-readable medium can further comprise instruction, is used for by by another microphone that is associated with described earphone described threshold level being determined in the actual environment noise measurement beyond the described sense of hearing opening.
This computer program can further comprise and be used for deducting described audio signal so that the instruction of described voice signal component to be provided from described voice signal.
This computer program can further comprise and is used for the instruction of determining to control the feature of application based on described.This computer program can further comprise: be used for the instruction that presents that interruption is associated with described audio signal when determining that described earphone is not worn; And the described instruction that presents of recovery when definite described earphone is worn.
This computer program can further comprise: the instruction of setting up the communication that is associated with described audio signal when determining that described earphone is worn; And when determining that described earphone finishes the instruction of described communication when not worn.
Described instruction can be set to based on the frequency characteristic of the voice signal that is obtained and periodically any one and carry out described analysis.
According to fourth aspect, a kind of equipment that comprises the earphone of two sense of hearing opening parts that are fit to be worn on user ear is provided, each earphone includes: the sound that microphone, described microphone are set to when this earphone is worn on ear to exist in described sense of hearing opening obtains voice signal; Signal processor, wherein, described signal processor is arranged to by analyzing the voice signal obtained determine whether each earphone all is worn on described user's ear, and the voice signal that is obtained comprises any one in the voice signal component of sound type outside the ear of the voice signal component of the tympanophonia sound type of existence when described earphone is worn or existence when earphone is not worn; And use, it is set to be determined to control machine based on whether earphone wears.
Description of drawings
Fig. 1 has schematically shown the equipment according to an execution mode.
Fig. 2 shows the flow chart according to the method for an execution mode.
Fig. 3 schematically shows a kind of computer-readable medium.
Embodiment
Fig. 1 has schematically shown the equipment 100 according to an execution mode.Equipment 100 comprises speaker unit 102,, is set to be worn on the earphone of sense of hearing opening part of user's ear, the microphone 106 that it has loud speaker 104 and is arranged together with loud speaker 104 that is.Loud speaker 104 has been provided audio signal, and for example, music or voice preferably provide this audio signal by amplifier 108, and the application element 109 that amplifier 108 can be exported from the audio frequency of for example media player or phone is successively obtained audio content.Microphone 106 is set to obtain the sound that exists in the sense of hearing opening of described ear when earphone is worn on ear, for example, hear sounds or breathing sound, certain audio sound that also has loud speaker 104 to be produced, perhaps when not being worn on ear, obtains by described earphone ambient noise, such microphone 106 can offer its output signal optional subtracter 110, and subtracter 110 deducts audio signal from microphone signal.In addition alternatively, microphone signal carries out filtering by filter 111a.Additionally or alternatively, before optional subtracter 110 will be input to by the audio sound that amplifier 108 provides, can carry out filtering to this audio sound by filter 111b.Because it is deleted from the signal component that audio sound sends, so when earphone was worn, optionally the output of subtracter 110 consisted essentially of cardiechema signals and/or breathes acoustical signal, and when earphone was not worn, optionally the output of subtracter 110 consisted essentially of ambient noise.Cardiechema signals and/or breathing acoustical signal or ambient noise signal are provided for sound type detector 112.At this, should note, substitute filter 111a and/or the filter 111b between amplifier 108 and the adder 110 between microphone 106 and the adder 110 or except such filter 111a and/or filter 111b, filter 111c can be disposed between subtracter 110 and the sound type detector 112.
Preferably the sound type detector of being realized by signal processor 114 12 is set to determine whether earphone is worn on user's ear.This is by the voice signal analysis of being obtained that is input to sound type detector 112 is realized.Voice signal can comprise when earphone is worn any one in the voice signal component of sound type outside the ear of the voice signal component of the tympanophonia sound type that exists or existence when earphone is not worn.Can determine that a kind of existence in these voice signal components or determine that a kind of preponderating at least by detecting some sound.For example, if there is the physiology sound such as breathing sound or heartbeat, then sound type detector 112 will determine that sound type belongs to tympanophonia sound type, promptly, earphone 102 is worn on ear, if perhaps ambient noise is preponderated, then sound type detector 112 will determine that sound type belongs to the outer sound type of ear, that is, earphone is not worn on ear.
Subtracter 110, optionally filter 111a, 111b, 111c and sound type detector 112 can be the parts of the signal processor 114 of executive component 110,111a, 111b, 111c, 112 function in analog domain or numeric field for example.
Carry out detection by identification when the sound property of the air sound property that breathing has when head flows and the breathing sound that when earphone is worn, can obtain by microphone 106 to breathing sound.
In essence, produced the main and corresponding faint sound of heart rate of frequency component in the heartbeat head.By the voice signal that microphone 106 obtains can be exaggerated, thereby filtering and processing can detect heartbeat.Because heartbeat self is usually in 0.5 to 3Hz scope, so filtering can comprise low-pass filtering.Because the sound that loud speaker 104 is provided is normally low-down under these frequencies, so narrow band filter can significantly strengthen cardiechema signals.
When earphone 102 was worn, ambient noise promptly, was present in the sound in the surrounding environment at user or earphone place, is decayed by the earphone 102 of the sense of hearing opening that has covered user ear before arriving microphone 106.The sound ratio of component earphone of the ambient noise when therefore, earphone is worn is low when not worn.Therefore, can be by the existence of the ambient noise in the voice signal that obtains being analyzed come definite detection to the outer sound type of ear.Can promptly, observe earphone and be worn or remove respectively according to the change of ambient noise level, or according to ambient noise level and threshold level relatively carry out thisly determine.Threshold level can be determined based on experience, perhaps when the part of head phone comprises earphone 102 and intention input from another microphone 118 of user's language, by by another microphone 118, another microphone 118 that for example is associated with earphone 102 is determined described threshold level.
For example, under the situation that has high-caliber ambient noise and breathing sound, although earphone is worn, but owing to there is very high ambient noise level, perhaps the decay of ambient noise is that relax and high relatively ambient noise amount arrives the sense of hearing opening of ear, therefore can distinguish the detection to ambient noise.Yet, only may the breathing sound that send from the earphone of being worn be detected.The mark of determining relatively (sign) that the detection of more weak in essence heartbeat is considered on the contrary the earphone worn.Sound type detector 112 is preferably set to and carries out aforesaidly determining, thereby finds dominant sound type, and described dominant sound type is not only preponderated on their sound levels but also related to and have which kind of sound.For example, the grade of above-mentioned three kinds of sound can be 1 when determining whether earphone is worn) heartbeat, 2) breathing sound, 3) ambient noise.
In user's head and therefore other sound that exists at the sense of hearing opening part of ear can be because it such as propagates, chews at language of former thereby some sound property of causing in head.
Preferably, based on the periodicity of voice signal and/or the analysis of frequency content are determined in order to detect the analysis to voice signal of breathing sound or heartbeat.
Since usually high frequency by user's bodily tissue decay than low frequency be attenuated more, therefore also can determine the type of sound based on their frequency characteristic.Therefore, by the voice signal that observation post obtains, preferably when the arbitrary audio frequency that provides by loud speaker 104 being provided by subtracter 110 and having determined the distribution on the frequency, can determine sound type.
Can use these to determine that in the technology one or more carry out describedly determining.For example, can be only according to one of detection of breathing sound, heartbeat, ambient noise level or frequency characteristic is determined.Also can determine according to the combination in any of all of these factors taken together.
Based on analysis, that is, determine that sound type is type or the outer type of ear in the ear, determines that thus whether earphone 102 is worn, and is set to receive the behavior of the one or more application 116 of application controller 115 may command of determining the result to sound type.Use 116 and can comprise the application element 109 that is set to the output audio content.Can be only when earphone is worn on user's ear, just the audio frequency relevant with music or Incoming/outbound call to be routed to earphone 102 to an example using 116 controls of carrying out.Another example is, if since probably this equipment therefore detect the ear that earphone 102 is worn on the user near the user, then ringing volume is turned down.Another example is, when earphone 102 is worn, allows the input from another microphone 118 that is associated with earphone 102, for example, and when microphone 118 is when comprising head phone a part of of earphone 102 and microphone 118.An example is again, when earphone 102 is worn, opens the wireless head-band receiver that comprises earphone 102, and when earphone 102 is not worn, closes described head phone.Another example is, according to being one or two earphones 102,102b are worn, determines that monophonic audio still is that multichannel audio is output to one or two earphone 102,102b.At this, when only having a quilt to wear in two earphones, audio frequency output only is routed to the earphone of being worn.Another example is, worn or when using, calls out acceptance when earphone 102,, picks up incoming call that is.An example is again, for example begins or recovers audio frequency to present from media player when having worn earphone 102, and present when stopping when ear takes earphone 102 or suspend audio frequency.Certainly, any combination of these factors all can be suitable for using 116 character.
At this, should be noted that method that whether definite earphone 102 of above explanation is worn also can be applicable to not have the earphone of loud speaker 104, such as the earplug that is used to prevent hazardous noise.For example, the noisy machine such as rig or grinder can not start before ear defenders are worn.Preferably, the logical circuit that allows to start the machine only is set to just to allow to start during by earphone 102 protections when ear.Certainly, ear defenders can be provided with loud speaker 104, and in the above-mentioned further feature each all can be combined with this execution mode.
Fig. 2 shows the flow chart according to the method for an execution mode.This method is suitable for as above being used for when earphone is worn on ear with reference to the earphone of the illustrated ear that is worn on the user of Fig. 1, presents audio signal in user's ear.This method comprises sound obtaining step 202, wherein, obtains the sound that exists in the sense of hearing opening of ear by microphone, and microphone is set to obtain for example breathing sound when earphone is worn on ear, perhaps obtain ambient noise when earphone is not worn on ear.This method also comprises determining step 208, wherein, determines whether earphone is worn on user's ear.This is to carry out by analyzing the voice signal obtained, and the signal that is obtained is about being made of in the voice signal component of sound type outside the ear of the voice signal component of the tympanophonia sound type that exists when described earphone is worn or existence when earphone is not worn any one.As illustrating, carries out reference Fig. 1 this step.
This method can comprise that audio frequency provides step 200, wherein, presents audio signal by the loud speaker of earphone.The audio signal that is provided will be present in the voice signal that is obtained in a large number.Therefore, deduct in the step 204, can from the voice signal that obtains, deduct known audio signal at audio frequency.In addition alternatively, can carry out filtering to voice signal or the audio signal obtained before deducting step, perhaps, in signal filtering step 206, the voice signal that deducts after the step be carried out filtering arbitrary.
Determine the one or more application of may command in application controls step 210 based on what whether earphone was considered to be worn.For example, this control can comprise when determining that earphone is not worn based on presenting that this determines to interrupt being associated with audio signal, and when definite earphone is worn recovery described presenting.Another example is, determines to set up the communication that is associated with audio signal based on this when definite earphone is worn, that is, receive phone calls, and when definite earphone is not worn, finish this communication, for example, the calling of hanging up the telephone.
An example of tympanophonia sound type signal component is the physiology voice signal such as breathing sound or heartbeat.When definite these physiology voice signals existed, the user had worn earphone probably.Extract heartbeat by in low pass filter, described physiology voice signal being carried out low-pass filtering, so that heartbeat signal to be provided.Because basic frequency, that is, heartbeat self is limit by himself characteristic on frequency, so the cut-off frequency of low pass filter is preferably between 3 to 10Hz, more preferably is between 3 to 5Hz, is most preferably about 4Hz.
An example of the outer sound type of ear is an ambient noise, and when ambient noise during above threshold level for example, determines that earphone is not worn.Can determine threshold level with reference to shown in Figure 1.
Illustrated method is particularly suitable for the earphone of encapsulated type.
The method according to this invention is suitable for realizing under the help of the processing unit such as computer and/or processor.Therefore, provide computer program in this equipment, it comprises and is provided so that processing unit, processor or computer carry out the instruction of step of arbitrary method of arbitrary execution mode of describing according to reference Fig. 2.Described computer program preferably includes the program code on the computer-readable medium 300 that is stored in as shown in Figure 3, described program code can be loaded and be carried out by processing unit, processor or computer 302, so that it is according to preferably carrying out described method respectively as the embodiments of the present invention of the described arbitrary execution mode of reference Fig. 2.The computer 302 and the computer program 300 that can exist in equipment as shown in Figure 1 can be set to the sequential execution of programmed code, wherein, carry out step by step or based on the operation of carrying out arbitrary method in real time, wherein, take action with the availability of required input data as required.Processing unit, processor or computer 302 preferably are commonly referred to as those devices of embedded system.Therefore, computer-readable medium 300 described in Fig. 3 and computer 302 should be understood that it only is illustrative purpose, so that the understanding to principle to be provided, and are not understood that any direct description to element.
Claims (29)
1. equipment, this equipment comprises:
Be suitable for being worn on the earphone of sense of hearing opening part of user's ear, this earphone comprises:
Can be provided the loud speaker of audio signal to present, and
Be arranged near the microphone this loud speaker, its sound that is used for when described earphone is worn on described ear existing in described sense of hearing opening obtains voice signal; And
Signal processor, wherein, this signal processor is set to, determine by analyzing the voice signal obtained whether described earphone is worn on user's ear, the voice signal that is obtained comprises any one in the voice signal component of sound type outside the ear of the voice signal component of the tympanophonia sound type of existence when described earphone is worn or existence when earphone is not worn.
2. equipment according to claim 1, wherein, the signal component of described tympanophonia sound type comprises the physiology voice signal.
3. equipment according to claim 2, wherein, described physiology voice signal comprises the signal component with user's breathing acoustic correlation connection.
4. according to claim 2 or 3 described equipment, wherein, described physiology voice signal comprises the signal component that is associated with user's heartbeat.
5. equipment according to claim 4, wherein, described signal processor is set to extract heartbeat by in low pass filter described physiology voice signal being carried out low-pass filtering, to detect heartbeat signal.
6. equipment according to claim 5, wherein, the cut-off frequency of described low pass filter is between 3 to 10Hz, be preferably between 3 to 5Hz, more preferably be 4Hz.
7. according to each described equipment in the claim 1 to 6, wherein, the outer sound type of described ear comprises ambient noise, and described signal processor is set to determine that described earphone is not worn when ambient noise surpasses threshold level.
8. equipment according to claim 7, wherein, described threshold level is by determining by being associated with described earphone and being set to always from another microphone that the sound that is present in described sense of hearing opening outside obtains voice signal the actual environment noise to be measured.
9. according to each described equipment in the claim 1 to 8, wherein, described signal processor is set to deduct described audio signal so that described voice signal component to be provided from described voice signal.
10. according to each described equipment in the claim 1 to 9, this equipment also comprises application, and described application is set to based on whether earphone being worn the feature of determining to control described application.
11. equipment according to claim 10, wherein, described application is set to not interrupt and presenting that described audio signal is associated when definite described earphone is worn, and is set to recover described presenting when definite described earphone is worn.
12. equipment according to claim 10, wherein, described application is set to set up the communication that is associated with described audio signal when determining that described earphone is worn, and is set to finish when definite described earphone is not worn described communication.
13. according to each described equipment in the claim 1 to 12, wherein, described analysis any one and periodically based on the frequency characteristic of the voice signal that is obtained.
14. according to each described equipment in the claim 1 to 13, this equipment also comprises second earphone of the sense of hearing opening part of the ear that is suitable for being worn on the user, and described second earphone comprises that the sound that is set to when described second earphone is worn on described ear to exist in described sense of hearing opening obtains the microphone of voice signal; And wherein, described signal processor is set to, determine by analyzing the voice signal that is obtained whether described earphone is worn on described user's ear, the voice signal that is obtained comprises when described earphone is worn any one in the voice signal component of sound type outside the ear of the voice signal component of the tympanophonia sound type that exists or existence when described earphone is not worn, and this equipment also comprises being set to whether be worn the application of determining to control machine based on described earphone.
15. a method that is used to comprise the equipment of earphone, described earphone is suitable for being worn on user's ear, presents audio signal when described earphone is worn on described ear in described ear, and this method may further comprise the steps:
Obtaining step obtains voice signal by the microphone that is arranged near the described earphone the loud speaker, and described microphone is used for when described earphone is worn on described user's ear obtaining voice signal from the sound that the sense of hearing opening of described ear exists; And
Determining step, determine by analyzing the voice signal obtained whether described earphone is worn on described user's ear, the voice signal that is obtained comprises any one in the voice signal component of sound type outside the ear of the voice signal component of the tympanophonia sound type of existence when described earphone is worn or existence when described earphone is not worn.
16. method according to claim 15, wherein, the signal component of described tympanophonia sound type comprises the physiology voice signal.
17. method according to claim 16, wherein, described physiology voice signal comprises the signal component with described user's breathing acoustic correlation connection, and described determining step comprises: when breathing sound can detect, determine that described earphone is worn.
18. according to claim 16 or 17 described methods, wherein, described physiology voice signal comprises the signal component with described user's breathing acoustic correlation connection, and described determining step comprises: when heartbeat can detect, determine that described earphone is worn.
19. method according to claim 18, this method is further comprising the steps of: extract heartbeat by in low pass filter described physiology voice signal being carried out low-pass filtering, so that heartbeat signal to be provided.
20. method according to claim 19, wherein, the cut-off frequency of described low pass filter is between 3 to 10Hz, be preferably between 3 to 5Hz, and more preferably be 4Hz.
21. according to each described method in the claim 15 to 20, wherein, the outer sound type of described ear comprises ambient noise, and described determining step comprises: determine that described earphone is not worn when ambient noise surpasses threshold level.
22. method according to claim 21, this method is further comprising the steps of: by by another microphone that is associated with described earphone described threshold level being determined in the actual environment noise measurement of described sense of hearing opening outside.
23. according to each described method in the claim 15 to 22, this method is further comprising the steps of: from described voice signal, deduct described audio signal so that described voice signal component to be provided.
24. according to each described method in the claim 15 to 23, this method is further comprising the steps of: based on the described feature of determining to control application.
25. method according to claim 24, this method is further comprising the steps of:
When being worn, definite described earphone do not interrupt and presenting that described audio signal is associated; And
When being worn, recovers described presenting by definite described earphone.
26. method according to claim 24, this method is further comprising the steps of:
When determining that described earphone is worn, set up the communication that is associated with described audio signal; And
When not worn, finishes by definite described earphone described communication.
27. according to each described method in the claim 15 to 26, wherein, described analysis any one and periodically based on the frequency characteristic of the voice signal that is obtained.
28. according to each described method in the claim 15 to 27, wherein, this equipment comprises the earphone of the sense of hearing opening part of two ears that are suitable for being worn on the user, each earphone includes: microphone, and its sound that is set to when described earphone is worn on described ear to exist in described sense of hearing opening obtains voice signal; Signal processor, wherein, described signal processor is set to, determine by analyzing the voice signal that is obtained whether each earphone is worn on described user's ear, whether the voice signal that is obtained comprises when described earphone is worn any one in the voice signal component of sound type outside the ear of the voice signal component of the tympanophonia sound type that exists or existence when earphone is not worn, and described method is further comprising the steps of: worn based on earphone and determine to control machine.
29. comprising, a computer-readable medium that comprises program code, described program code when carrying out, be set to make the instruction of described processor execution according to the action of each described method in the claim 15 to 28 by processor.
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| PCT/EP2009/059193 WO2010083896A1 (en) | 2009-01-23 | 2009-07-16 | Acoustic in-ear detection for earpiece |
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| EP (1) | EP2382797B1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2010083896A1 (en) | 2010-07-29 |
| KR20110107831A (en) | 2011-10-04 |
| US20100189268A1 (en) | 2010-07-29 |
| TW201043045A (en) | 2010-12-01 |
| CN102293012B (en) | 2016-04-13 |
| US8705784B2 (en) | 2014-04-22 |
| EP2382797B1 (en) | 2017-08-23 |
| JP5412529B2 (en) | 2014-02-12 |
| EP2382797A1 (en) | 2011-11-02 |
| JP2012516091A (en) | 2012-07-12 |
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